Saint-Ghislain is a Walloon municipality

Municipality

A municipality is essentially an urban administrative division having corporate status and usually powers of self-government. It can also be used to mean the governing body of a municipality. A municipality is a general-purpose administrative subdivision, as opposed to a special-purpose district...

 located in the Belgian

Belgium

Belgium , officially the Kingdom of Belgium, is a federal state in Western Europe. It is a founding member of the European Union and hosts the EU's headquarters, and those of several other major international organisations such as NATO.Belgium is also a member of, or affiliated to, many...

 province of Hainaut. On 1 January 2006 the municipality had 22,466 inhabitants. The total area is 70.18 km², giving a population density

Population density

Population density is a measurement of population per unit area or unit volume. It is frequently applied to living organisms, and particularly to humans...

 of 320 inhabitants per km².

History

The town is named after St Ghislain. In the 7th century, with two unknown disciples Ghislain made a clearing in the vicinity of Castrilocus (now Mons

Mons

Mons is a Walloon city and municipality located in the Belgian province of Hainaut, of which it is the capital. The Mons municipality includes the old communes of Cuesmes, Flénu, Ghlin, Hyon, Nimy, Obourg, Baudour , Jemappes, Ciply, Harmignies, Harveng, Havré, Maisières, Mesvin, Nouvelles,...

), later taking up his abode at a place called Ursidongus, where he built an oratory

Oratory (worship)

An oratory is a Christian room for prayer, from the Latin orare, to pray.-Catholic church:In the Roman Catholic Church, an oratory is a structure other than a parish church, set aside by ecclesiastical authority for prayer and the celebration of Mass...

 or chapel

Chapel

A chapel is a building used by Christians as a place of fellowship and worship. It may be part of a larger structure or complex, such as a church, college, hospital, palace, prison or funeral home, located on board a military or commercial ship, or it may be an entirely free-standing building,...

 dedicated to Saints Peter

Saint Peter

Saint Peter or Simon Peter was an early Christian leader, who is featured prominently in the New Testament Gospels and the Acts of the Apostles. The son of John or of Jonah and from the village of Bethsaida in the province of Galilee, his brother Andrew was also an apostle...

 and Paul

Paul of Tarsus

Paul the Apostle , also known as Saul of Tarsus, is described in the Christian New Testament as one of the most influential early Christian missionaries, with the writings ascribed to him by the church forming a considerable portion of the New Testament...

. Ursidongus was later named after him.

Datacenter

Google

Google

Google Inc. is an American multinational public corporation invested in Internet search, cloud computing, and advertising technologies. Google hosts and develops a number of Internet-based services and products, and generates profit primarily from advertising through its AdWords program...

chose Saint-Ghislain in 2007 to host its new major European datacenter.
Google currently has 12 people employed full time as of 10-13-2011.